Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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High-Pressure Phase Behavior of Polycaprolactone, Carbon Dioxide, and Dichloromethane Ternary Mixture Systems

Polycaprolactone, 디클로로메탄, 이산화탄소로 구성된 3성분계 고압 상거동 측정

  • Gwon, JungMin (School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University) ;
  • Shin, Hun Yong (Department of Chemical and Biological Engineering, Seoul National University of Science and Technology) ;
  • Kim, Soo Hyun (Korea Institute of Science and Technology) ;
  • Kim, Hwayong (School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University)
  • 권정민 (서울대학교 화학생물공학부) ;
  • 신헌용 (서울과학기술대학교 화공생명공학과) ;
  • 김수현 (한국과학기술연구원 바이오소재연구센터) ;
  • 김화용 (서울대학교 화학생물공학부)
  • Received : 2014.06.09
  • Accepted : 2014.07.29
  • Published : 2015.04.01
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Abstract

The high-pressure phase behavior of a polycaprolactone (Mw=56,145 g/mol, polydispersity 1.2), dichloromethane, and carbon dioxide ternary system was measured using a variable-volume view cell. The experimental temperatures and pressures ranged from 313.15 K to 353.15 K and up to 300 bar as functions of the $CO_2$/dichloromethane mass ratio and temperature, at poly(D-lactic acid) weight fractions of 1.0, 2.0, and 3.0%. The correlation results were obtained from the hybrid equation of state (Peng-Robinson equation of state + SAFT equation of state) for the $CO_2$-polymer system using the van der Waals one-fluid mixing rule. The three binary interaction parameters were optimized by the simplex method algorithm.

Polycaprolactone, Dichloromethane, 이산화탄소로 구성된 3성분계 고압 시스템의 상거동 측정 실험은 가변 부피 셀 장치를 이용해서 측정했다. 실험의 온도범위는 313.15 K에서 353.15 K, 압력은 약 300 bar까지 측정했으며 실험결과는 Polycaprolactone의 질량 분율이 1.0%, 2.0%, 3.0%일 때 온도와 이산화탄소/Dichloromethane의 질량 분율로 정리했다. 또한 실험 결과는 hybrid 상태방정식 (Peng-Robinson 상태방정식과 SAFT 상태방정식의 혼합형태) 을 이용하여 열역학적으로 검증하였으며, 혼합규칙은 반데르 발스의 단일 유체 혼합규칙을 사용했다. 이 다성분계 시스템에서 이원 상호 작용 파라미터 등, 각종 파라미터는 심플렉스 알고리즘을 통해 최적화했다.

Keywords

References

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